PHP do-while loop example

PHP do-while loop

PHP do-while loop always execute block of code at least once, then check condition and repeat the loop as long as the condition is true.

PHP do-while loop syntax

<?php

do
{
// block of code to be executed
}
while(condition)

?>

In do-while loop first execute a block of code once an then check the condition, if condition is true as long as the code to be executed.

Example of php do-while loop

<?php

$i=1;
do
{
echo $i;
$i++;
}
while($i<=5)

?>

The output is:
12345

In above do-while example, first set variable $i=1, then execute do statement once and then check the while condition $i<=5,

at initial $i=1 directly execute do code print $i.
Then increment 1 to $i,
now $i=2 the check while ($i<=5) condition is true,
$i=3 condition is true,
$i=4 condition is true,
$i=5 condition is true.
When $i=6 the condition $i<=5 is not true as 6 is not less than or equal to 5. The do-while loop result is : 12345

do-while example

<?php
$i=5;

do
{
echo $i;
$i- -;
}
while($i>0)

?>

The output is: 54321

Example – PHP do-while loop

<?php

$name=”meera”;
$i=1;

do
{
echo “Hello “. $name . “<br/>”;
$i++;
}
while($i<=5)

?>

The output is:

Hello meera
Hello meera
Hello meera
Hello meera
Hello meera